title: Changes in Salmonella enteritidis contamination in two layer lines vaccinated during the rearing period.
mesh_terms: D000818:Animals; D002432:Cecum / Q000382:microbiology; D002645:Chickens / Q000145:classification / Q000382:microbiology*; D005260:Female; D008099:Liver / Q000382:microbiology; D010053:Ovary / Q000382:microbiology; D010058:Oviposition; D011201:Poultry Diseases / Q000276:immunology / Q000382:microbiology / Q000517:prevention & control; D012481:Salmonella Infections, Animal / Q000276:immunology* / Q000517:prevention & control*; D022562:Salmonella Vaccines; D012477:Salmonella enteritidis / Q000276:immunology* / Q000302:isolation & purification; D013154:Spleen / Q000382:microbiology
chemical_list: D022562:Salmonella Vaccines